Does leaving Thailand reset the 90-day reporting requirement for a retirement visa?

I did my first 90-day report in person while on a one year extension of stay for retirement. Before my next 90-day reporting date will come due, I used a single-entry permit to leave and return after 7 days.

My understanding is that the re-entry resets the 90-day reporting period to "day 1", and the new report date is now due 90 days from the date that I re-entered Thailand.

I am asking to confirm because there is nothing indicating a new date in the stamp in my passport, etc. - I only have the now-outdated paper 90-day receipt and nothing except the re-entry stamp to go by. So is it just up to me to determine and submit the report by the self-calculated date? I don't want to run up any fines without knowing it. Thanks.